Improvement in injectors



W. RANDALL.

INJECTOR.

Patented JaALZS, 1877.

Nc..1acs,61a.V

N, PUERS. PNOTO-UTHOGRAFHER, WASHINGTON. D C.

UNITED STATES PATENT EEIE.

IMPROVEMENT IN INJECTORS.

Specification forming part of Letters Patent No. 186,619, dated January 23, 1877; application tiled June 19, 1876.

To all whom 'it may concern:

Be it known that I, WILLIAM RANDALL, of Salem, in the county of- Essex and State of Massachusetts, have invented an Improvement in Injectors, of which the following is a specification This invention has for its object the following-described methods of regulating the feeding of the steam-jet, and the delivery ot' the feed-water to the boiler.

Reference is had to the accompanying drawing, forming a part of this specification, in explaining the same, in which- Eigure l is an elevation of the casing, showing the outlets and inlets. Fig. 2 is a longitudinal section of the same. Figs. 3, 4, and 5 are details.

The method of regulating the supply of steam will be rst described, and consists in providing the nozzle A, arranged concentrically inside the casing C, and surrounding the tubular stem B, with a movement to and from the exit-orifice a ot' tubular stem B, and protruding slightly beyond the same, when completely opening the nozzle-orifice. This I accomplish by forming the end ot' the nozzle A with a screw-thread, playing in a screwthread on the interior of the casing, and, also, the additional screw-thread, upon which is screwed the spindle D, which carries and operates the nozzle A, and tits loosely over the tubular stem B, to which it is secured by the pins d d', which pass through slots c c in the spindle-cap D, and have a bearing on the collar E, which surrounds the end of the spindle. The shoulder con the interior of the case4 holds the pins securely in place on the collar. The collar isperforated, 'as shown, to supply a passage for the steam which enters through inlet F. The tubular stem Al has a coneshaped or beveled nozzle, and the spindle D is provided with the handle G.

Ot' course, the least amount of steam that can be used is that which passes through the tubular stein A', and that amount can be increased by opening the passage f between the tubular stem and the nozzle B. This is accomplished by causing the nozzle A to recede from the nozzle-orifice by revolving the spindle, causing thestem B to ride ou the collar as `the spindle operates the nozzle A, causing the same to recede from the stem B.

The method ot' regulating the feeding of the water which enters through Water-inlet H to the boiler is b v causing .the tubular stem I, provided with the cone-shaped end g, with a movement in and out of the flaring tube K. This I effect by making a rack, L, on the face of stein I, mounting the same on legs h, and arranging the cogj on the end of spindle M to mesh with the rack L.

It Will readily be seen that the minimum supply of Water is that given from the tubular stem l when in contact with the edges of the Haring tube K, and that by withdrawing the same from the iaring mouth a larger quantity is permit-ted to How.

Having thus fully described my invention, I claim and desire to secure by Letters Patent- 1. The combination of the Haring mouth K with the cone-shaped tube I, having a movement to and from the same, substantially as and for the purpose described.

2. The combination ot' the daring mouth K with the cone-ended tubular 'stem I, mounted on legs l1., rack L, and cog jv on the end of Vspindle M, substantially as described.

WILLIAM RANDALL.

Witnesses:

FRED. F. RAYMONE, ADoLPH J. OETTINGER. 

